Recently, the European Union released the 2016 annual report on the rapid warning system for food and feed, which covers statistical analysis of system introduction, type of notification, risk category, product classification, country of origin, and notification project. Reading with a portable aflatoxin detector makes the test results more accurate and objective, avoiding human error.
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Aflatoxin becomes a nut export "blocking tiger"
In 2016, the system issued a total of 2,993 original notifications, and the original notification produced 7,288 follow-up information. The overall 2016 notification increased by 11.1% compared with 2015. The report clearly includes information about China: aflatoxins in China nuts, nut products and seeds ranked 5th in number, and 50 were notified; peanuts originating in China were notified 49, of which 48 were border refusal Measures; the total number of products notified in China was 254, a year-on-year decrease of 35.53%.
In 2010, the European Commission revised the aflatoxin residues in peanuts, pistachios and other foods, requiring peanuts and other oilseeds, nuts and their products for direct consumption or use as food ingredients (excluding Badanmu, Pistachio, almond, hazelnut and brazil nuts) aflatoxin B1 is limited to 2.0 μg/kg, and total aflatoxin B1+B2+G1+G2 is limited to 4.0 μg/kg.
Aflatoxin is classified as a type 1 carcinogen by the World Health Organization. Its harmfulness is that it has a destructive effect on human and animal liver tissues, and can cause liver cancer or even death in severe cases. "Aflatoxin B1" is one of aflatoxins, and its toxicity and carcinogenicity are also strongest. It is found in soil, animals and plants, and various nuts, especially peanuts, soybeans, wheat and other grain and oil products. Generally, it is most polluted in the high temperature and high humidity areas in the south such as the tropics and subtropics. The detection rate of aflatoxins in food is relatively high. Aflatoxin is heat-resistant and can be cracked at 280 °C, so it is difficult to break under normal cooking and processing temperatures. AQSIQ stipulates that aflatoxin B1 is one of the must-check items for most foods.
As a traditional food that consumers love, it is necessary to strengthen the detection of aflatoxin in nuts. It is also the raw material that must be used in production. Existing national standards have specified a method for detecting aflatoxin in some products, but the method is cumbersome, and it is difficult for enterprise inspectors to master. Moreover, in the aflatoxin detection method, pretreatment of the sample is very important. Therefore, it is very important to establish a stable, reliable and rapid detection method for aflatoxin B1 in nuts.
First, the rapid quantitative detection program of aflatoxin B1 in Shanghai fly test biological nuts - accurate quantification in -8min
Based on the leading fluorescence quantitative FPOCT technology platform, Shanghai Festo Biotechnology is the first to introduce aflatoxin B1 fluorescence quantitative rapid detection system, including aflatoxin detector and aflatoxin fluorescence quantitative rapid test strip, which can be quickly and accurately quantified in 8min. The residual content of aflatoxin B1 in various nuts is detected, the sample preparation is simple, the detection operation is simple, the result is accurate and reliable, and can be printed on site. The accuracy is in accordance with the detection result of HPLC method, and is suitable for various nut processing enterprises, the first Three-party testing agencies and government regulatory agencies.
4.1. Aflatoxin B1 Fluorescence Quantitative Rapid Detection System Performance
ïµ detection sensitivity: 0.5μg / kg;
ïµQuantitative linear range: 1.0μg/kg - 75.0μg/kg;
ïµ sample pretreatment time: 7min;
ïµ Detection time: 8min;
ïµAccuracy: recovery rate is 80%-125%;
ïµ specificity: no cross-reactivity with other mycotoxins at a concentration of 1000 μg/kg;
4.2. Sample preparation process
1, crushing (nut sample crushing treatment, weighing);
2. Oscillation extraction (5min);
3. Centrifugation (2min);
4.3. Testing operation process
1. Dilution;
2. Sample addition reaction (8 min);
3, reading, print test report;
4.4. Result interpretation and output
The test result will be presented on the liquid crystal display of the fluorescence reader. At the same time, the paper test report can be obtained by pressing the print button. In addition, after the WIFI data upload function of the instrument is turned on, the relevant data information will be automatically uploaded to the “Food Safety Traceability Managementâ€. Cloud platform for easy traceability and quality management.
4.5. Shanghai fly test biomycotoxin series fluorescent quantitative test strip product highlights
According to the Xiamen Inspection and Quarantine Bureau, the EU is the main export target market for Xiamen Port, and the outbound goods are mainly food and cosmetics, plants and their products. Here, remind relevant export enterprises: should start from the base, reduce and timely detect aflatoxin pollution in the food source; improve the management level of the enterprise itself, improve the quality management system, and ensure product quality and safety. In addition, we must pay close attention to and interpret the changes in the standard of aflatoxin in the importing countries, scientifically evaluate the impact and positively respond. It is also necessary to strengthen the inspection of aflatoxins in export products. Enterprises should implement the main responsibility and actively cooperate with the quality inspection departments to do the testing of raw materials and finished products, and to check the export inspection.